Arctium nemorosum, Lej.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 215

5. A. nemorosum Lej. , Mag. Hort. (Liège) 1: 289 (1833).

Plant 100-250 cm. Basal leaves up to 50 cm, broadly ovate, cordate; petioles hollow. Each main branch of inflorescence racemose, often terminating in a cluster of three capitula. Involucre 20-25 x 30-35 mm in fruit, ovoid, subsessile, green or tinged with dark purple, usually with sparse arachnoid indumentum, closed in fruit. Florets about as long as involucral bracts. Achenes 6-9 mm, dark brown; pappus 1-3-5 mm. 2n - 36. Much of Europe, but rare in the south and parts of the north. Au Be Br Bu Cz Da Fe Ga Ge Hb He Hu It Ju No Po Rm Rs (C, W, K, E) Su.